Implement dragging external files to remote projects (#28987)

Release Notes:

- Added the ability to copy external files into remote projects by
dragging them onto the project panel.

---------

Co-authored-by: Peter Tripp <petertripp@gmail.com>

crates/terminal_view/src/terminal_view.rs

@@ -1944,7 +1944,11 @@ mod tests {
             .unwrap();
 
         let entry = cx
-            .update(|cx| wt.update(cx, |wt, cx| wt.create_entry(Path::new(""), is_dir, cx)))
+            .update(|cx| {
+                wt.update(cx, |wt, cx| {
+                    wt.create_entry(Path::new(""), is_dir, None, cx)
+                })
+            })
             .await
             .unwrap()
             .to_included()